Waterproof coating or paint and the method of making same



Patentecl Feb. 8, 1938 PATENT OFFICE WATERPROOF COATING R PAINT AND THE METHOD OF MAKING SAME Charles Elbert Spooncr, Arkansas City, Kans.

No Drawing. Application December 28, 1936, Serial N0. 118,019

1 Claim.

This invention relates to a composition for resurfacing and waterproofing materials such as roofs, shingles and other surfaces, the said invention being especially effective for coating 5 and protecting shingled and paper roofs, although the composition is capable of a wide range of uses and the inventor does not wish to be limited with respect to this phase of his invention.

It is an object of the invention to provide a composition of matter or elements which does not become unduly hard so that it will break or crack but, on the other hand, the product is pliable and provides an efiective non-porous covering for coating old or new roof surfaces and it is effective to prevent erosion, rust and rot of the materials incased thereby.

It is a further object of this invention to produce a coating of the character indicated which will be comparatively inexpensive and which will prove efficient and satisfactory in use.

With the foregoing and other objects in view, the invention consists in the ingredients hereinafter mentioned and substantially in the proportions according to the following formula.

In carrying the'invention into practice, coal tar, raw rubber, air-slacked lime, sugar of lead and gasoline are mixed together and preferably the proportions are substantially as follows:

Parts Coal tar 50 Raw rubber 3 Air-slacked lime 2 Sugar of lea 1 Gasoline 5 In producing the waterproofing composition,

the coal tar and sugar of lead are first mixed together without heat beyond that of ordinary atmospheric temperature and these commingled ingredients should be allowed to set for 36 hours before adding the other elements or ingredients 5 of the composition. The aforesaid commingled coal tar and sugar of lead will then be commingled with the other ingredients in any order of the addition of the elements, as a sequence of their addition does not materially affect the re- 10 sult, although the gasoline when added aids in rendering the mass more fluid and diminishes the amount of force or power required for the agitation of the commingled elements but, in any event, the ingredients should be thoroughly com- 15 mingled by agitation and, to that end, they may be placed in any appropriate receptacle or container such as a barrel or the like.

It is, of course, apparent that the proportions indicated will produce a certain volume of the 20 finished product which can be increased or diminished proportionally by the employment of the selected parts to produce what is required for the particular uses to which the invention is put.

I claim: 25

A re-surfacing and waterproofing compound comprising the following ingredients in substantially the following proportions:

Parts Coal tar 30 Raw rubber 3 Air-slacked line 2 Sugar of lead 1 Gasoline 5 35 CHARLES ELBERT SPOONER. 

